'''
使用过哪些python的内置函数
print()
max()
min()
ord()
chr()
str()
int()
len()
eval() 计算表达式的字符串形式
'''

print("2+3")

str1 = "3+4"
print(eval(str1))

str2 = "3>5"
print(eval(str2))

str3 = "[3,4,5,6,7,8]"
print(eval(str3))

str4 = "{'name':\"tom\",'age':34}"
a = eval(str4)
print(type(a))
